[Circulating immune complexes in treated latent syphilis]

22 patients with treated latent syphilis were studied by the method of anticomplementary activity. The patients did not have any antecedent of primary or secondary muco-cutaneous lesion or any other clinical or humoral manifestation of other diseases. The presence of circulating immune complexes with statistical significance were shown in 14 cases. Syphilis in this period is considered as an immuno reactive disease, obliging to periodic clinical and specialized laboratory controls.